Low hum when both channels are on

Power Amps 2/90/2
1

2 90 2 making noise, but only when using both channels. 4/12 on the right is fine but when I turn on the left it has a hum in it. Has anyone else had this issue, and if so what is the solution? Thanks

2

Welcome to the forum!

A low level hum could be a bad preamp tube.

How old is the amp? When was it last serviced?

Thanks,

Dave

1 Like
3

Bout a year old & never been serviced.

4

Where would one send this power amp to get serviced?

5

If you’re in the continental US, you would send it to the factory.

You can contact the factory for an RMA by emailing the following info to support@fryette.com:

Full Name
Phone Number
Address
Serial number
Place and Date of purchase.

Dave